Liquid fuel burner



April 25, 1933. 5 s c 1,905,067

LIQUID FUEL BURNER Filed March 28, 1932 gwuento'o Patented Apr. 25, 1933 ,UNITED' STATE P T OFFICE a:

. sAiv UELr. snnnnicx, or DENVER, coLoRADqAssIGNoR T s. a c. HOLDING conroq RATIQN, or bnnvnn, COLORADO, A ooRronArIon or ooronnno LIQUID' FUEL BURNER...

' Application filed March 28, 1932. Seria11-No.'601,543.

This invention relates to a liquid fuel burner and has for its principal object, theprovision of a highly efl'icientburner for liquid fuels which can be employed either as a 001m iplete self contained unit, or in connection with apermanent fuel supply. a

j Another object of the invention is to so construct the device that vapors from the fuel reservoir will. be fed into the burner 9 flame'when it has reached a pre-deterinined pressure. 1

A further object is ,to providea burner in which a supply of liquid fuel will be brought to a high temperature in the reservoir before being fed-to the burner. j

A still further object is to provide means whereby an auxiliary oxygen. supplymay be fed tothe burner fla-me should an exceedingly high temperature bedesired. y Other objects and advantages; reside in the detail construction of the invention, which is designed. for simplicity, economy; and efliciency. Thesewill become more apparent from the followingdescription. In the following detailed the invention reference i's-had to the accompanying drawing whichforms apart hereof.

Like-numerals refer to likeparts in all views of the-drawing and-throughoutthe description. Q l f a Inthedrawing: ,Fig. lis a verticahsection through the improved burner arranged as a self contained unit. The section'in this viewis taken on-the line 1--1, Fig. 2.

Fig. 2 is a plan view of the burner ioi Fig. 3 is a horizontal section the'rethrough 1 taken on the line 353, Fig. 1.,

1. Fig. 4 is a diagrammatic view illustrating the burner connected with a perma'nentfuel supply,and with'an oxygentank.

y Fig. 5fis a detail View illustrating a sealing cap which may be employed. to seal the'burlr,

er of Fig. 1 when not in use.

Fig. 6 illustrates a sectional view through atype of relief valve that maybe employed in the invention. 1

l 4 Theinvention comprises thefollowing construction A reservoir is provided with a burndescription: of

The reservoir is supportedabove the air in- 7 take 1-3o-n suitable legsl lp V 'A tubular fuel ring 15 is positioned in the bottom'ofthe sleeve 11. The fuel ring 15 communicatesv with the reservoirthrough a needle valve seat 16. Theneedle valve seat is controlled floy means of a needle valve 17, i i

which extendsthrough the wall of the reservoir 10 protected by suitable packing 18.

The space between the air conduit12 and the sleeve 11 is filled with a suitable porous lire-proofimaterial 19. Theparticular material which is intended to be used forthis purpose will be incorporatedin a second application for Letters Patent thereon. a Any mate.- rial, however, which willprovide an interconnected series of relatively small'voids or cells wouldbe satisfactory for this purpose. -The' .porous material extends from the bottom of the. sleeve 11, substantially to the top of the air conduit 12.

The reservoir suitable filler opening by removing a filler cap20.

.Whenthe needle valve 17 is opened, :it allows the fluid fuel to fiow into the fuel ring 15 and from thence through a series of perthe interior of the'sleeve-ll. It will rise in 10. may be through a the sleeve 11 tothe liquid level in. the reser voir '10, and will thence be carried to the top of theporous' material 19 by the absorbtive'capillaryattraction thereo The fuel is. ignited at thesurface of the porous material 19 and the flame will project above the burner sleeve 1 1.1 This flame will heat the sleeve 11 and the'porous material 19 to a point where the ascending fluid will be vaporized andgassified, sothat, thereafter the flame will be supplied with gas.

The hot porous material and the hot sleeve 11 will raise the temperature. of the liquid fuel in the reservoir 10 vcausing it to create a pressure thereinwhichwillstill further 7 increase the flow of the fuel oilthrough the burner. When this pressurereaches a predetermined point where it might'become dangerous, itis relieved through a by-pass pipe 22 and a spring actuated check or'safety 'valve 23i' The 'va1ve 23 may be' of an'y of the"usual designs 'whichi admit flow at cerketand need not be described in detail herein.

, Thegas from the valve 23 flows into a tubular gas ring 24 secured about the upper extremity of a'burner sleeve 11. A series :of

perforations 25 fcommunicate between the gas ring 24: and theinteriorof the burner c fuel thereto;

sleeve 20" sothat this gas or vapor Will be projected'into the flameto supply additional 7 The air supply through the air intake -fean becontrolled as desired by a means of asuitable shutter cap; 26; the positionofwhich is'indi'cated in broken line at The device g rms in :desc ribedfforms complete unitiw'hich requires no external fuel 'su pply' and which is'conveniently port-able.

' It makes an 'ex'cellent c'ain'p stovefor tourists and the'i'like. The top of: thereservoir is provided with series ofs'upportswhich,

can support any desired :cooking utensil. For heating purposes it has been'found ad-v 'vantageousto ,placea' plate offirje clayv or thesurroundingair; 7 I g T; 711116 eing transported, theburner' sleeve similar heat resisting material upon the sup, ports 27 as indicated atf'28; This serves .to

spread the flame over a relatively Large area so asto increase; 1ts' effectiveness in heating threadedcap 29' whichjis provided with an internal box: 30. .When secured upon the :vent' any evaporation from the. perous mate.-

upper extremity of the burnersleeve 11, the

i c'apj 29"effectively closes the sleeve and the boss 3 0 seals: the air. conduit 12 soas to,pr e-- isld'es'ired to use the burner in movingia plug 32 adj acent the bottom of the reservoir 10 and installingagsupply pi eee,

controlled "by a 'valve 3436between the reservoir 10 and the tank 31; The by-passj pipe 22 is then"pl aced' by means of areturn'pipe 35, Controlled by "a valve 36, which extends between :the bypass opening in the reservoir 10 'and the tanlrigly asshown inFig 2.

" Byr vthis}arrangement. fresh 'fuel will be constantly supplied to the reservoir 10 through the supply' 'pipe' {The vapor v pressure in the upperportion of the reser voir 10 maybe relieved throughithereturn lighting purposesyif desired." a V If the normal temperature of the burner 1s not sufliciently; high for the desired opera I tions,- it; can be increased by connecting the "said reservoir.

'pipe 35. j The returning vapors willbe-con;

densed in the reservoir 10 so'as not to be lost tothe atmosphere; Ithas been found that a lightburner 37 can'be connected to the 0;

return'pipe 35 or the by-pass'pipe 22,-to employ Iaportion of the returning gasesfor 7 fuel ring 24 with an oxygen tank 38 by means of asuitable 'connectingpipe 39; This will supply pure oxygen through theopenings 25 directly into the flame, and will bring the temperature of the latter "to any desired .deree. 7' 1 a r g The inventionican'beljusedupon any suitable liquid fuel; and it has been found tobe' particlarly eflective' whenfcused withi low 7875 grade alcoholj" v Y 'While' a specific form'of the-improvement has been described and illustrated'herein, it's of the invention.

is desiredito be understoodthat-the same may V be varied,'t within thescope o'fthe appended claims, without departing 'from the 'spirit if?" is claimed and "desired secured Letters Patent is ,1. A liquid fuel burner comprising: a fuel reservoir a burner sleeve projectingupwardlyirfrom within said reservoir through the s top thereof; an air conduit passing upwardly through'said burner sleeve iii-spaced relation to'the walls thereof and opening througlithe' bottom of said fuel reservoir; porousfinaterial filling the space between said air conduitand said burner" tube; and a perforated tubular j e p I I .ringsurroundin'g said air conduit withinsaid '11 may be cl'osed by=means of a su table burner sleeve," said ring communicating with I '7 2.; A, liquid fuel burner a fuel reservoir a burner sleeve projecting upwardly from within saidreservoir through the'top thereof,.an air conduit :passingl up'- wardly through said burner; s'leevein spaced relation to v the walls'thereof; v porous material filling the space between" saidiair con 'vdui nfand said tube mperfdmted i burner-sleeve, saidring cornmunicatingrwith,

horizontally placed tubular ring in said said reservoirgganda valve arranged tocon- .trol the supply. offuel to said tubularr ring, I

said valve being operable from the exterior e of said reservoir. i j;

3. A liquidfuel'burnercomprisinggaifuel jreservoir, a burner sleeve. projecting upwardly from said reservoir an air conduit passlng upwardly'through-said burner sleeve 7 in spaced relationtoithe wallsithereof, "po-f I rous materialyfilling the spaces-between said} '7 air conduit andsaid burner tube; meansfOr 7 admittinglfuel from said reservoirto said porous material; anannulartubefsurroundi ing said'burner sleeve, there being openings-i1 3 communicating from said tube through said sleeve; and a by-pass connection from the upper portion of said reservoir to said tube.

4. A liquid fuel burner comprising: a fuel reservoir, a burner sleeve projecting upwardly from said reservoir; means for admitting fuel from said reservoir to said burner sleeve; an annular tube surrounding said burner sleeve and provided with perforations communicating through the wall of said sleeve; a by-pass connection from the upper portion of said reservoir to said tube; and a valve in said by-pass connection arranged to open at a pre-determined pressure.

5. A liquid fuel burner comprising: a fuel reservoir, a .burner sleeve projecting upwardly from said reservoir; means for admitting fuel from said reservoir to said burner sleeve; a perforated annular tube surrounding said burner sleeve and communicating therethrough; a by-pass connection from the upper portion of said reservoir to said tube; and a valve in said by-pass connection arranged to open at a pre-determined pressure; and means for supplying oxygen to said annular passage.

In testimony whereof, I afiix my signa- SAMUEL T. SHERRICK.

ture. 

